1 Reply Latest reply on Oct 23, 2018 4:45 PM by xzng

    "No Connect" pins on PSoC 4L: "Do Not Connect" or "Not Connected"?

    casper_3812461

      Hi Everyone,

       

      In the "PSoC® 4: PSoC 4200L Datasheet", on the bottom of page 12 it reads:

       

      "Balls C6, D11, H11, H3, L4, and L5 are No Connects (NC) on the 124-BGA package. Pins 11 and 15 are NC on the 48-TQFP packages."

       

      Does anybody know if these pins are not internally connected or that they are connected (for another purpose) and I should leave them unconnected?

      I have no device at hand, otherwise I would have measured it.

       

      I find it good design practice to connect all pins that are not internally connected to GND on the PCB.

      Tying these pins to GND allows for a better spread of GND on the PCB. Besides, as a former Philips employee, I was drilled to not have any floating copper on a PCB.

       

      Cheers,

       

      Casper van Doorne

      Doofenshmirtz Evil Inc.